A young couple was making passionate love in the back of the man's panel van when, suddenly, the girl (being a bit on the kinky side) yells out, "Oh, big boy, whip me! Whip me!"
The guy, not wanting to pass up this unique opportunity, obviously didn?t have any whips to hand but, in a flash of inspiration, opens the window, snaps the antenna off his van and proceeds to whip the girl until they both collapse in sado-masochistic ecstasy.

About a week later, the girl notices that the marks left by the whipping session are beginning to fester a bit so she goes to her doctor. The medico takes one look at the wounds and asks, "Did you get these marks having sex?"

The girl is somewhat taken aback and embarrassedly admits that, yes, she did.

Nodding his head knowingly, the doctor says, "I thought so because in all my years of doctoring, you?ve got the worst case of van aerial disease that I've ever seen."